commit e3804842c60157bab0d5bf2daa42f99ec3f8499d
Author: Sebastian Sumpf <sebastian.sumpf@genode-labs.com>
Date:   Mon Jun 2 13:24:37 2014 +0200

    csum.patch

--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1716,7 +1716,13 @@ static int smsc95xx_resume(struct usb_interface *intf)
 
 static void smsc95xx_rx_csum_offload(struct sk_buff *skb)
 {
-	skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2);
+	/*
+	 * Use bytewise access to avoid alignment issues on packets that have none
+	 * aligned sizes
+	 */
+	char *tail = skb_tail_pointer(skb);
+	skb->csum = (*(tail - 2) << 8) | *(tail - 1);
+
 	skb->ip_summed = CHECKSUM_COMPLETE;
 	skb_trim(skb, skb->len - 2);
 }